Recall Alert: 2012 Porsche Cayenne, 2011-2012 Porsche Panamera

Porsche is recalling 270 model-year 2011-12 versions of the Porsche Panamera Turbo, 2012 Panamera Turbo S and 2012 Porsche Cayenne Turbo due to a potential defect with the engine, according to the National Highway Traffic Safety Administration.

The affected vehicles were manufactured from Sept. 13, 2010, through May 22, 2012. They have two turbochargers with turbine wheels that may fracture due to a casting defect, according to NHTSA. The fracture could draw oil into the exhaust system and cause smoke or a possible car fire.

The defect affects 264 Panameras and six Cayennes, according to the automaker. Porsche isn't aware of any accidents or injuries resulting from the failure of the turbine wheels.

Porsche will notify owners starting this month, and dealers will replace the turbine wheels free of charge. Owners can call Porsche at 800-767-7243 or NHTSA's vehicle safety hotline at 888-327-4236 for more info.